“They are both huge stars and the producers understand Susan and Diversity have commitments,” a BGT source told RadioTimes.com. “It’s a testament to the success of BGT that both have become so massive and everyone wishes them all the best on their upcoming performances and tours.

“There’s a great line-up of acts for BGT: The Champions from previous BGT series and other Got Talent shows from around the world and everyone is really excited for viewers to see.”